Pi Aurigae
Appearance
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Auriga |
Right ascension | 05h 59m 56.0994s |
Declination | +45° 56′ 12.248″ |
Apparent magnitude (V) | 4.348 |
Characteristics | |
Spectral type | M3II |
U−B color index | 1.48 |
B−V color index | 1.83 |
R−I color index | 1.48 |
Astrometry | |
Radial velocity (Rv) | 0.8 km/s |
Proper motion (μ) | RA: -2.42 mas/yr Dec.: -7.32 mas/yr |
Parallax (π) | 3.88 ± 0.85 mas |
Distance | approx. 800 ly (approx. 260 pc) |
Absolute magnitude (MV) | 6.016 |
Details | |
Mass | 0,4 M☉ |
Radius | 0,5 R☉ |
Luminosity | 0,004 L☉ |
Temperature | 2,000–3,500 K |
Other designations | |
Database references | |
SIMBAD | data |
Data sources: | |
Hipparcos Catalogue, CCDM (2002), Bright Star Catalogue (5th rev. ed.) |
Pi Aurigae (π Aur / π Aurigae) is a star in the constellation Auriga.
Pi Aurigae is a red M-type bright giant with a mean apparent magnitude of +4.30. It is approximately 840 light-years from Earth. It is classified as an irregular variable star and its brightness varies from magnitude +4.24 to +4.34.